"in use; accordingly, a PDF/A file will often be larger than an equivalent PDF file that does not include embedded fonts. The use of transparency is forbidden in PDF/A-1. The majority of PDF generation tools that allow for PDF/A document compliance, such as the PDF export in OpenOffice.org or PDF export tool in Microsoft Office 2007 suites, will also make any transparent images in a given document non-transparent. That restriction was removed in PDF/A-2. Some archivists have voiced concerns that PDF/A-3, which allows arbitrary files to be embedded in PDF/A documents, could result in circumvention of memory institution procedures and"
"Adobe Digital Editions Adobe Digital Editions (abbreviated ADE) is an ebook reader software program from Adobe Systems, built initially (1.x version) using Adobe Flash. It is used for acquiring, managing, and reading eBooks, digital newspapers, and other digital publications. The software supports PDF, XHTML (through the nonproprietary EPUB file type specification) and Flash-based content. It implements a proprietary scheme of Digital Rights Management (""DRM"") which, since the version 1.5 release in May 2008, allows document sharing among multiple devices and user authentication via an Adobe ID. ADE is a successor to Adobe eBook Reader. Windows and OS X versions of"
"Dd (Unix) dd is a command-line utility for Unix and Unix-like operating systems, the primary purpose of which is to convert and copy files. On Unix, device drivers for hardware (such as hard disk drives) and special device files (such as /dev/zero and /dev/random) appear in the file system just like normal files; can also read and/or write from/to these files, provided that function is implemented in their respective driver. As a result, can be used for tasks such as backing up the boot sector of a hard drive, and obtaining a fixed amount of random data. The program can"
"is an XML-based e-book format created by E-Book Systems; it has been superseded by the EPUB electronic publication standard. Invented by Adobe Systems, and first released in 1993, PDF became ISO 32000 in 2008. The format was developed to provide a platform-independent means of exchanging fixed-layout documents. Derived from PostScript, but without language features like loops, PDF adds support for features such as compression, passwords, semantic structures and DRM. Because PDF documents can easily be viewed and printed by users on a variety of computer platforms, they are very common on the World Wide Web and in document management systems"
"graphics including logical structuring elements, interactive elements such as annotations and form-fields, layers, rich media (including video content) and three dimensional objects using U3D or PRC, and various other data formats. The PDF specification also provides for encryption and digital signatures, file attachments and metadata to enable workflows requiring these features. Adobe Systems made the PDF specification available free of charge in 1993. In the early years PDF was popular mainly in desktop publishing workflows, and competed with a variety of formats such as DjVu, Envoy, Common Ground Digital Paper, Farallon Replica and even Adobe's own PostScript format. PDF was"
"in CAD drawings, layered artwork, maps, multi-language documents etc. Basically, it consists of an Optional Content Properties Dictionary added to the document root. This dictionary contains an array of Optional Content Groups (OCGs), each describing a set of information and each of which may be individually displayed or suppressed, plus a set of Optional Content Configuration Dictionaries, which give the status (Displayed or Suppressed) of the given OCGs. A PDF file may be encrypted for security, or digitally signed for authentication. However, since a SHA-1 collision was discovered making use of the PDF format, digital signatures using SHA-1 have been"
"PDF). In February 2016, the IA announced that DjVu would no longer be used for new uploads. Wikimedia Commons, a media repository used by Wikipedia among others, conditionally permits PDF and DjVu media files. Third party tools using APIs and SDKs can create and manipulate DjVu files. A JavaScript based library can read DjVu files online. DjVu DjVu ( , like French ""déjà vu"") is a computer file format designed primarily to store scanned documents, especially those containing a combination of text, line drawings, indexed color images, and photographs. It uses technologies such as image layer separation of text and"
"to display it. PDF/A is an ISO-standardized version of the PDF specialized for use in the archiving and long-term preservation of electronic documents. PDF/A-3 allows embedding of other file formats, including XML, into PDF/A conforming documents, thus potentially providing the best of both human- and machine-readability. The W3C's XSL-FO (XSL Formatting Objects) markup language is commonly used to generate PDF files Metadata, data about data, can be used to organize electronic resources, provide digital identification, and support the archiving and preservation of resources. In well-structured, machine-readable electronic records, the content can be repurposed as both data and metadata. In the"
"worldwide. The current PDF specification, ISO 32000-1:2008, is available from ISO's website, and under special arrangement, without charge from Adobe. Because the format is designed to reproduce fixed-layout pages, re-flowing text to fit mobile device and e-book reader screens has traditionally been problematic. This limitation was addressed in 2001 with the release of PDF Reference 1.5 and ""Tagged PDF"", but 3rd party support for this feature was limited until the release of PDF/UA in 2012. Many products support creating and reading PDF files, such as Adobe Acrobat, PDFCreator and OpenOffice.org, and several programming libraries such as iText and FOP. Third"
"hyperlink, table of contents, and bookmark conversion. 128 bit security includes settings for controlling the printing and modification of the PDF, as well as password protection capabilities. The professional version also allows for merging PDFs, and placing stamps or a letterhead at the time of conversion. deskUNPDF Standard allows for conversion of a PDF into an editable format such as .doc or .rtf. The converted document can be modified by any word processor such as Word or Open Office Writer. In addition to PDF to Word capabilities, deskUNPDF Professional features PDF conversion to: .xls (Excel), .odt (Open Document), HTML, and"
"reasons, including the avoidance of licensing fees for DPS and more efficient support of legacy Carbon and Classic code; QuickDraw-based applications use bitmapped drawing exclusively. Adobe's copyright stipulations for the PDF standard are much less restrictive, granting conditional copyright permission to anyone to use the format in software applications free of charge. Display PostScript Display PostScript (or DPS) is a 2D graphics engine system for computers which uses the PostScript (PS) imaging model and language (originally developed for computer printing) to generate on-screen graphics. To the basic PS system, DPS adds a number of features intended to ease working with"
"binary file specifies the GUI definition for one User Application (UA) User interface. Several UA user interface trees can be combined to constitute the CDS display definition. A DF is composed of two parts : an optional symbol definition, and a widgets definition. The widget library is similar to Widgets used in computing. There are Containers, Lists, ScrollPanes, Buttons, Menus, Labels, EditBoxes, etc... Although the DF File is binary, the standard has also defined an associated XML definition, which is easier to manipulate in tools. The concepts used by ARINC 661 are close to those used in User interface markup"
"format, PDF has several advantages over PostScript: A PDF file is a 7-bit ASCII file, except for certain elements that may have binary content. A PDF file starts with a header containing the magic number and the version of the format such as codice_4. The format is a subset of a COS (""Carousel"" Object Structure) format. A COS tree file consists primarily of ""objects"", of which there are eight types: Furthermore, there may be comments, introduced with the percent sign (codice_9). Comments may contain 8-bit characters. Objects may be either ""direct"" (embedded in another object) or ""indirect"". Indirect objects are"
"depend upon the specific device addressed. The most common device used, of course, is the floppy disk system, which uses a format similar to codice_12, where M is a flag of sorts ($ for directory listing, @ for indicating a desire to overwrite a file if it already exists, unused otherwise.), D is the (optional) physical disk unit number (0: or 1: for dual-drive systems, just 0: for single-disk units like the 1541, et al., which defaults to 0: if left unspecified), codice_13 is a resource name up to 16 characters in length (most characters allowed except for certain special"
"12 D.N — Description Number: an S.D converted to a number: 1=A, 2=C, 3 =D, 4=L, 5=R, 6=N, 7=; 13 M(n) — a machine whose D.N is number “n” 14 satisfactory — a S.D or D.N that represents a circle-free machine 15 U — a machine equipped with a “universal” table of instructions. If U is “supplied with a tape on the beginning of which is written the S.D of some computing machine M, U will compute the same sequence as M.” 16 β’—“beta-primed”: A so-called “diagonal number” made up of the n-th figure (i.e. 0 or 1) of the"
"PDF files and interprets their contents for display and interaction (conforming readers) and PDF products that read and/or write PDF files for a variety of other purposes (conforming products)."" Some proprietary specifications under the control of Adobe Systems (e.g. Adobe Acrobat JavaScript or XML Forms Architecture) are in the normative references of ISO 32000-1 and are indispensable for the application of ISO 32000-1. A new version of the PDF specification, ISO 32000-2 (PDF 2.0) was published by ISO's TC 171 SC 2 WG 8 Committee in July, 2017. The goals of the ISO committee developing PDF 2.0 include evolutionary enhancement"
"by the use of ""external streams"" or ""Alternate Images"". Standardized subsets of PDF, including PDF/A and PDF/X, prohibit these features. Text in PDF is represented by ""text elements"" in page content streams. A text element specifies that ""characters"" should be drawn at certain positions. The characters are specified using the ""encoding"" of a selected ""font resource"". A font object in PDF is a description of a digital typeface. It may either describe the characteristics of a typeface, or it may include an embedded ""font file"". The latter case is called an ""embedded font"" while the former is called an ""unembedded"
"with codice_43, above) shows the file is locked against modification or deletion. The first line contains the disc title and the modification count. The DFS provides a working space, divided up into the directory and the library. The ""directory"" is the working directory on the current volume, much like the working directory on any other command line system. The ""library"" is a second, alternative working directory that functions more like ""PATH"" and had the benefit of being able to be on any volume. Requests to open files with unqualified names, will first be searched for in the working directory; failing"
"Portable Document Format (PDF) files rather than printed material. During the discovery phase of litigation, a large number of documents might require the use of unique identifiers for each page of each document for reference and retrieval. Bates numbering, named for the Bates Automatic Numbering-Machine, assigns an arbitrary unique identifier to each page. Such identification may be solely numeric or may contain a combination of letters and numbers (alphanumeric). There is no standard method for numbering documents, nor is there a standard type face used for such numbers. Manual Bates stampers use a self-inking mechanism with four to seven numbered"
"according to the above DSD would be: Document Structure Description Document Structure Description, or DSD, is a schema language for XML, that is, a language for describing valid XML documents. It's an alternative to DTD or the W3C XML Schema. An example of DSD in its simplest form: This says that element named ""foo"" in the XML namespace ""http://example.com"" may have two attributes, named ""first"" and ""second"". A ""foo"" element may not have any character data. It must contain one subelement, named ""bar"", also in the ""http://example.com"" namespace. A ""bar"" element is not allowed any attributes, character data or subelements."
"systems for PDF. The PDF Reference has technical details for an end-user overview. Adobe Systems recommends that any PDF application concerned with security, implements a combination of application sandboxing, data execution protection including non-executable memory, address space layout randomization, and stack cookies as defense mechanism. Watermarking is often used for enforcing copyright on PDF files and help provide evidence in legal situations rather than as a restriction. A standard pdf watermark works well for PDF distribution because its of its consistent appearance. A number of applications (ex. Google Chrome) provides secure internal viewing that protects content against malicious exploit. This"
"Organization for Standardization (ISO). By virtue of this change, ISO produces versions of the PDF specification beyond 1.7, and Adobe will be only one of the ISO technical committee members. ISO standards for ""full function PDF"" are published under the formal number ISO 32000. Full function PDF specification means that it is not only a subset of Adobe PDF specification; in the case of ISO 32000-1 the full function PDF includes everything defined in Adobe's PDF 1.7 specification. However, Adobe later published extensions that are not part of the ISO standard. There are also proprietary functions in the PDF specification,"
"Document Content Architecture The Document Content Architecture, or DCA for short, is a standard developed by IBM for text documents in the early 1980s. DCA was used on mainframe and iSeries systems, and formed the basis of DisplayWrite's file format. DCA was later extended as MO:DCA (Mixed Object Document Content Architecture), which added embedded data files, like graphics. The original purpose of DCA was to provide a common document format that could be used across multiple IBM word processing platforms–such as the IBM PC, IBM mainframes, the Displaywriter dedicated word processor, and the IBM 5520 Administrative System. DCA defined two"
"[GDS78] and [GDS79]. DDM (short for ""Design, Drafting, Manufacturing"") was a 3-dimensional wireframe computer-aided design application. In the mid-1980s, it was one of the top ten selling CAD packages on the market. By 2006, DDM continued to be supported by Parametric Technology Corporation as ""Dimension III"". The General Motors Central Foundry Division (GM-CFD) had applied DDM to the design of castings and tooling for automotive components such as engine blocks, cylinder heads and steering knuckles. DDM was run on Calma's proprietary dual monitor workstation hardware connected to Data General Nova and later Digital VAX 11/780-series computers. GM-CFD had DDM installations"
"Df (Unix) ' (abbreviation for disk f""'ree"") is a standard Unix command used to display the amount of available disk space for file systems on which the invoking user has appropriate read access. is typically implemented using the statfs or statvfs system calls. The Single UNIX Specification specifications for are: Most Unix and Unix-like operating systems add extra options. The BSD and GNU coreutils versions include , where free space is listed in human readable format, adding units with the appropriate SI prefix (e.g. 10MB), , listing inode usage, and , restricting display to only local filesystems. GNU includes as"
"PDF417 PDF417 is a stacked linear barcode symbol format used in a variety of applications; primarily transport, identification cards, and inventory management. PDF stands for Portable Data File. The 417 signifies that each pattern in the code consists of bars and spaces, and that each pattern is 17 units long. The PDF417 symbology was invented by Dr. Ynjiun P. Wang at Symbol Technologies in 1991. It is ISO standard 15438. PDF417 is used in many applications by both commercial and government organizations. PDF417 is one of the formats (along with Data Matrix) that can be used to print postage accepted"
"DjVu DjVu ( , like French ""déjà vu"") is a computer file format designed primarily to store scanned documents, especially those containing a combination of text, line drawings, indexed color images, and photographs. It uses technologies such as image layer separation of text and background/images, progressive loading, arithmetic coding, and lossy compression for bitonal (monochrome) images. This allows high-quality, readable images to be stored in a minimum of space, so that they can be made available on the web. DjVu has been promoted as providing smaller files than PDF for most scanned documents. The DjVu developers report that color magazine"
"or QR Code. PDF417 PDF417 is a stacked linear barcode symbol format used in a variety of applications; primarily transport, identification cards, and inventory management. PDF stands for Portable Data File. The 417 signifies that each pattern in the code consists of bars and spaces, and that each pattern is 17 units long. The PDF417 symbology was invented by Dr. Ynjiun P. Wang at Symbol Technologies in 1991. It is ISO standard 15438. PDF417 is used in many applications by both commercial and government organizations. PDF417 is one of the formats (along with Data Matrix) that can be used to"
"technique is called sandboxing. How secure is PDF? PDF security News Portable Document Format security Portable Document Format security is concerned with the protection of information and property from theft, corruption, and attack. Its main purpose it to make sure information is productive and accessible to its intended users. From its early stages of development in the 1990s, PDF started including security features. Over the years, several threats have been clearly identified including the following: attack technique. Adobe Reader and Acrobat products are supported by a large and complex code including several proprietary extensions. This apparent flexibility translates into a"
"PDFCreator PDFCreator is an application for converting documents into Portable Document Format (PDF) format on Microsoft Windows operating systems. It works by creating a virtual printer that prints to PDF files, and thereby allows practically any application to create PDF files by choosing to print from within the application and then printing to the PDFCreator printer. Since 2009, PDFCreator has included closed source adware, toolbars and other controversial software that is installed by default. The application is written in Microsoft C# and released to the public at no charge. It works with 64-bit and 32-bit Windows versions including Windows 10."
"built-in Microsoft Office Document Imaging (MODI) Optical Character Recognition (OCR) software, the document becomes keyword searchable. The software converts existing PDF documents into PDF/A-1b files which make them searchable, consistent, and archivable providing PDF/A validation compliance to make sure they reproduce similarly in the future. Solid PDF Tools allows users to edit PDFs by adding custom watermarks and moving page orders. It will also detect hyperlinks and has text mark-up recovery. Originally launched in 2003 by Solid Documents, Solid PDF Tools has become known as an alternative to Adobe® Acrobat® and utilized by businesses worldwide. In August 2008, version 2.0"
"deliver a high-quality navigation and reading experience to users with disabilities. The content view is based on the physical order of objects within the PDF's content stream and may be displayed by software that does not fully support the tags view, such as the Reflow feature in Adobe's Reader. PDF/UA, the International Standard for accessible PDF based on ISO 32000-1 was first published as ISO 14289-1 in 2012, and establishes normative language for accessible PDF technology. PDF attachments carrying viruses were first discovered in 2001. The virus, named ""OUTLOOK.PDFWorm"" or ""Peachy"", uses Microsoft Outlook to send itself as an attachment"
"Solid PDF Creator Solid PDF Creator is proprietary document processing software which converts virtually any Windows-based document into a PDF. Suitable for home and office use, the program appears as a printer option in the Print menu of any print-capable Windows application. The same technology used in the software's Solid Framework SDK is licensed by Adobe for Acrobat X Solid Documents, the makers of Solid PDF Creator, launched the product in 2006 and have released several version updates since then including 2.0 in 2007. The latest product enhancement, new to version 7, allows for the conversion of Windows-based documents into"